millepora light question
by, 03-12-2012 at 06:07 PM (944 Views)
Currently I am running a 6 bulb t5 setup at 54 watts a piece on a 48' long 75 gallon that hand about 3" above the water. I have always wanted and have tried on a few occasions to keep your standard acropora and millepora with no positive results to report all parameters are reading good, nitrate, phosphate, ammonia, mag, calc, dkh but I keep reading that rapid bleaching (which is what I keep experiencing) is caused by too much light and too little light results in browning and discoloration. since they have been under metal halides when they are purchased I have been assuming that I need to place them up about mid to high in the tank but am I wrong? should I be placing them low to mid with these t5's and letting them grow towards the light? I have more coming and do not want to lose anymore I am going to go with millepora specifically this time b/c I am reading they seem to be a little more forgiving and require less light to thrive.
One last thing i would like to add is that I have a galaxea that was happy only in indirect light (I had it on the sand in direct light and it was very unhappy, placed up higher later and it loved it) and now I have it on the sand behind the rock and view of everything keeping the only pieces of kenya that I can't kill from getting too big and spawning more. The galaxea has been there for months and seems to like it but the acro's I place up mid to high bleach out and die within days.